Tampa's Syniverse Holdings is acquiring Belgian telecom company MACH for 550 million euros, or roughly $690 million, giving a boost to its global mobile reach.

Syniverse, which provides wireless voice and data service for more than 900 operators in more than 160 countries, said Tuesday it signed a definitive agreement for the all-cash deal, subject to regulatory approvals.

Luxembourg-based MACH, which has a growing portfolio of cloud-based communication services, has 650 operator customers that it serves from offices in 12 countries. Among its global customers are T-Mobile, Telus, Verizon Wireless and Microsoft.

"The proposed acquisition will grow our top line revenue, while providing the scale and critical mass to further develop and speed to market advanced solutions that will give providers throughout the mobile ecosystem the ability to deliver a better mobile experience for end users worldwide," Syniverse president and CEO Jeff Gordon said in a statement.

Syniverse last year was taken private after being acquired by the Carlyle Group for approximately $2.5 billion.